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How many different ways can a committee of 4 students be selected from a class of 30 ?

User MUFC
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1 Answer

6 votes

ANSWER:

657720 different ways

Explanation:

Since the order does not matter, therefore we can determine that we solve it by means of the permutations. The permutation formula is as follows


_nP_r=(n!)/((n-r)!)

In this case n is 30 and r is 4, replacing:


_(30)P_4=(30!)/((30-4)!)=657720

Therefore there are 657720 different ways to set up the committees.

User Peter Bence
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